// SPDX-License-Identifier: GPL-2.0-only /* * Broadcom BCM7xxx System Port Ethernet MAC driver * * Copyright (C) 2014 Broadcom Corporation */ #define pr_fmt(fmt) … #include <linux/init.h> #include <linux/interrupt.h> #include <linux/module.h> #include <linux/kernel.h> #include <linux/netdevice.h> #include <linux/dsa/brcm.h> #include <linux/etherdevice.h> #include <linux/platform_device.h> #include <linux/of.h> #include <linux/of_net.h> #include <linux/of_mdio.h> #include <linux/phy.h> #include <linux/phy_fixed.h> #include <net/dsa.h> #include <linux/clk.h> #include <net/ip.h> #include <net/ipv6.h> #include "bcmsysport.h" /* I/O accessors register helpers */ #define BCM_SYSPORT_IO_MACRO(name, offset) … \ BCM_SYSPORT_IO_MACRO(intrl2_0, SYS_PORT_INTRL2_0_OFFSET); BCM_SYSPORT_IO_MACRO(intrl2_1, SYS_PORT_INTRL2_1_OFFSET); BCM_SYSPORT_IO_MACRO(umac, SYS_PORT_UMAC_OFFSET); BCM_SYSPORT_IO_MACRO(gib, SYS_PORT_GIB_OFFSET); BCM_SYSPORT_IO_MACRO(tdma, SYS_PORT_TDMA_OFFSET); BCM_SYSPORT_IO_MACRO(rxchk, SYS_PORT_RXCHK_OFFSET); BCM_SYSPORT_IO_MACRO(txchk, SYS_PORT_TXCHK_OFFSET); BCM_SYSPORT_IO_MACRO(rbuf, SYS_PORT_RBUF_OFFSET); BCM_SYSPORT_IO_MACRO(tbuf, SYS_PORT_TBUF_OFFSET); BCM_SYSPORT_IO_MACRO(topctrl, SYS_PORT_TOPCTRL_OFFSET); /* On SYSTEMPORT Lite, any register after RDMA_STATUS has the exact * same layout, except it has been moved by 4 bytes up, *sigh* */ static inline u32 rdma_readl(struct bcm_sysport_priv *priv, u32 off) { … } static inline void rdma_writel(struct bcm_sysport_priv *priv, u32 val, u32 off) { … } static inline u32 tdma_control_bit(struct bcm_sysport_priv *priv, u32 bit) { … } /* L2-interrupt masking/unmasking helpers, does automatic saving of the applied * mask in a software copy to avoid CPU_MASK_STATUS reads in hot-paths. */ #define BCM_SYSPORT_INTR_L2(which) … \ BCM_SYSPORT_INTR_L2(…) BCM_SYSPORT_INTR_L2(…) /* Register accesses to GISB/RBUS registers are expensive (few hundred * nanoseconds), so keep the check for 64-bits explicit here to save * one register write per-packet on 32-bits platforms. */ static inline void dma_desc_set_addr(struct bcm_sysport_priv *priv, void __iomem *d, dma_addr_t addr) { … } /* Ethtool operations */ static void bcm_sysport_set_rx_csum(struct net_device *dev, netdev_features_t wanted) { … } static void bcm_sysport_set_tx_csum(struct net_device *dev, netdev_features_t wanted) { … } static int bcm_sysport_set_features(struct net_device *dev, netdev_features_t features) { … } /* Hardware counters must be kept in sync because the order/offset * is important here (order in structure declaration = order in hardware) */ static const struct bcm_sysport_stats bcm_sysport_gstrings_stats[] = …; #define BCM_SYSPORT_STATS_LEN … static void bcm_sysport_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info) { … } static u32 bcm_sysport_get_msglvl(struct net_device *dev) { … } static void bcm_sysport_set_msglvl(struct net_device *dev, u32 enable) { … } static inline bool bcm_sysport_lite_stat_valid(enum bcm_sysport_stat_type type) { … } static int bcm_sysport_get_sset_count(struct net_device *dev, int string_set) { … } static void bcm_sysport_get_strings(struct net_device *dev, u32 stringset, u8 *data) { … } static void bcm_sysport_update_mib_counters(struct bcm_sysport_priv *priv) { … } static void bcm_sysport_update_tx_stats(struct bcm_sysport_priv *priv, u64 *tx_bytes, u64 *tx_packets) { … } static void bcm_sysport_get_stats(struct net_device *dev, struct ethtool_stats *stats, u64 *data) { … } static void bcm_sysport_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol) { … } static int bcm_sysport_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol) { … } static void bcm_sysport_set_rx_coalesce(struct bcm_sysport_priv *priv, u32 usecs, u32 pkts) { … } static void bcm_sysport_set_tx_coalesce(struct bcm_sysport_tx_ring *ring, struct ethtool_coalesce *ec) { … } static int bcm_sysport_get_coalesce(struct net_device *dev, struct ethtool_coalesce *ec, struct kernel_ethtool_coalesce *kernel_coal, struct netlink_ext_ack *extack) { … } static int bcm_sysport_set_coalesce(struct net_device *dev, struct ethtool_coalesce *ec, struct kernel_ethtool_coalesce *kernel_coal, struct netlink_ext_ack *extack) { … } static void bcm_sysport_free_cb(struct bcm_sysport_cb *cb) { … } static struct sk_buff *bcm_sysport_rx_refill(struct bcm_sysport_priv *priv, struct bcm_sysport_cb *cb) { … } static int bcm_sysport_alloc_rx_bufs(struct bcm_sysport_priv *priv) { … } /* Poll the hardware for up to budget packets to process */ static unsigned int bcm_sysport_desc_rx(struct bcm_sysport_priv *priv, unsigned int budget) { … } static void bcm_sysport_tx_reclaim_one(struct bcm_sysport_tx_ring *ring, struct bcm_sysport_cb *cb, unsigned int *bytes_compl, unsigned int *pkts_compl) { … } /* Reclaim queued SKBs for transmission completion, lockless version */ static unsigned int __bcm_sysport_tx_reclaim(struct bcm_sysport_priv *priv, struct bcm_sysport_tx_ring *ring) { … } /* Locked version of the per-ring TX reclaim routine */ static unsigned int bcm_sysport_tx_reclaim(struct bcm_sysport_priv *priv, struct bcm_sysport_tx_ring *ring) { … } /* Locked version of the per-ring TX reclaim, but does not wake the queue */ static void bcm_sysport_tx_clean(struct bcm_sysport_priv *priv, struct bcm_sysport_tx_ring *ring) { … } static int bcm_sysport_tx_poll(struct napi_struct *napi, int budget) { … } static void bcm_sysport_tx_reclaim_all(struct bcm_sysport_priv *priv) { … } static int bcm_sysport_poll(struct napi_struct *napi, int budget) { … } static void mpd_enable_set(struct bcm_sysport_priv *priv, bool enable) { … } static void bcm_sysport_resume_from_wol(struct bcm_sysport_priv *priv) { … } static void bcm_sysport_dim_work(struct work_struct *work) { … } /* RX and misc interrupt routine */ static irqreturn_t bcm_sysport_rx_isr(int irq, void *dev_id) { … } /* TX interrupt service routine */ static irqreturn_t bcm_sysport_tx_isr(int irq, void *dev_id) { … } static irqreturn_t bcm_sysport_wol_isr(int irq, void *dev_id) { … } #ifdef CONFIG_NET_POLL_CONTROLLER static void bcm_sysport_poll_controller(struct net_device *dev) { … } #endif static struct sk_buff *bcm_sysport_insert_tsb(struct sk_buff *skb, struct net_device *dev) { … } static netdev_tx_t bcm_sysport_xmit(struct sk_buff *skb, struct net_device *dev) { … } static void bcm_sysport_tx_timeout(struct net_device *dev, unsigned int txqueue) { … } /* phylib adjust link callback */ static void bcm_sysport_adj_link(struct net_device *dev) { … } static void bcm_sysport_init_dim(struct bcm_sysport_priv *priv, void (*cb)(struct work_struct *work)) { … } static void bcm_sysport_init_rx_coalesce(struct bcm_sysport_priv *priv) { … } static int bcm_sysport_init_tx_ring(struct bcm_sysport_priv *priv, unsigned int index) { … } static void bcm_sysport_fini_tx_ring(struct bcm_sysport_priv *priv, unsigned int index) { … } /* RDMA helper */ static inline int rdma_enable_set(struct bcm_sysport_priv *priv, unsigned int enable) { … } /* TDMA helper */ static inline int tdma_enable_set(struct bcm_sysport_priv *priv, unsigned int enable) { … } static int bcm_sysport_init_rx_ring(struct bcm_sysport_priv *priv) { … } static void bcm_sysport_fini_rx_ring(struct bcm_sysport_priv *priv) { … } static void bcm_sysport_set_rx_mode(struct net_device *dev) { … } static inline void umac_enable_set(struct bcm_sysport_priv *priv, u32 mask, unsigned int enable) { … } static inline void umac_reset(struct bcm_sysport_priv *priv) { … } static void umac_set_hw_addr(struct bcm_sysport_priv *priv, const unsigned char *addr) { … } static void topctrl_flush(struct bcm_sysport_priv *priv) { … } static int bcm_sysport_change_mac(struct net_device *dev, void *p) { … } static void bcm_sysport_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats) { … } static void bcm_sysport_netif_start(struct net_device *dev) { … } static void rbuf_init(struct bcm_sysport_priv *priv) { … } static inline void bcm_sysport_mask_all_intrs(struct bcm_sysport_priv *priv) { … } static inline void gib_set_pad_extension(struct bcm_sysport_priv *priv) { … } static int bcm_sysport_open(struct net_device *dev) { … } static void bcm_sysport_netif_stop(struct net_device *dev) { … } static int bcm_sysport_stop(struct net_device *dev) { … } static int bcm_sysport_rule_find(struct bcm_sysport_priv *priv, u64 location) { … } static int bcm_sysport_rule_get(struct bcm_sysport_priv *priv, struct ethtool_rxnfc *nfc) { … } static int bcm_sysport_rule_set(struct bcm_sysport_priv *priv, struct ethtool_rxnfc *nfc) { … } static int bcm_sysport_rule_del(struct bcm_sysport_priv *priv, u64 location) { … } static int bcm_sysport_get_rxnfc(struct net_device *dev, struct ethtool_rxnfc *nfc, u32 *rule_locs) { … } static int bcm_sysport_set_rxnfc(struct net_device *dev, struct ethtool_rxnfc *nfc) { … } static const struct ethtool_ops bcm_sysport_ethtool_ops = …; static u16 bcm_sysport_select_queue(struct net_device *dev, struct sk_buff *skb, struct net_device *sb_dev) { … } static const struct net_device_ops bcm_sysport_netdev_ops = …; static int bcm_sysport_map_queues(struct net_device *dev, struct net_device *slave_dev) { … } static int bcm_sysport_unmap_queues(struct net_device *dev, struct net_device *slave_dev) { … } static int bcm_sysport_netdevice_event(struct notifier_block *nb, unsigned long event, void *ptr) { … } #define REV_FMT … static const struct bcm_sysport_hw_params bcm_sysport_params[] = …; static const struct of_device_id bcm_sysport_of_match[] = …; MODULE_DEVICE_TABLE(of, bcm_sysport_of_match); static int bcm_sysport_probe(struct platform_device *pdev) { … } static void bcm_sysport_remove(struct platform_device *pdev) { … } static int bcm_sysport_suspend_to_wol(struct bcm_sysport_priv *priv) { … } static int __maybe_unused bcm_sysport_suspend(struct device *d) { … } static int __maybe_unused bcm_sysport_resume(struct device *d) { … } static SIMPLE_DEV_PM_OPS(bcm_sysport_pm_ops, bcm_sysport_suspend, bcm_sysport_resume); static struct platform_driver bcm_sysport_driver = …; module_platform_driver(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_ALIAS(…) …; MODULE_LICENSE(…) …;
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